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In the last two-year review, the authors posed a question as to whether industrial hygiene analytical chemistry was a "mature" field (A1). They concluded that this was not the case. Our survey of the recent literature leads us to the same conclusion. Analytical chemistry research remains highly innovative and productive in the industrial hygiene field. This makes perfect sense when one considers how rapidly the nature of work itself is changing in the industrialized world. New commercial processes and technologies in the workplace have led to many technical challenges for the analytical chemistry laboratory. Even new industries have appeared in the past decade, and change promises to accelerate as we enter the next century.